﻿using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Security.Principal;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using FacebookLoginbutton.Models;
using Facebook;

namespace FacebookLoginbutton.Controllers
{
    public class AccountController : Controller
    {

        public IFormsAuthenticationService FormsService { get; set; }
        public IMembershipService MembershipService { get; set; }

        protected override void Initialize(RequestContext requestContext)
        {
            if (FormsService == null) { FormsService = new FormsAuthenticationService(); }
            if (MembershipService == null) { MembershipService = new AccountMembershipService(); }

            base.Initialize(requestContext);
        }

        // **************************************
        // URL: /Account/LogOn
        // **************************************

        public ActionResult LogOn()
        {
            return View();
        }

        [HttpPost]
        public ActionResult LogOn(LogOnModel model, string returnUrl)
        {
            if (ModelState.IsValid)
            {
                if (MembershipService.ValidateUser(model.UserName, model.Password))
                {
                    FormsService.SignIn(model.UserName, model.RememberMe);
                    if (Url.IsLocalUrl(returnUrl))
                    {
                        return Redirect(returnUrl);
                    }
                    else
                    {
                        return RedirectToAction("Index", "Home");
                    }
                }
                else
                {
                    ModelState.AddModelError("", "The user name or password provided is incorrect.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        // **************************************
        // URL: /Account/LogOff
        // **************************************

        public ActionResult LogOff()
        {
            FormsService.SignOut();

            return RedirectToAction("Index", "Home");
        }

        // **************************************
        // URL: /Account/Register
        // **************************************

        public ActionResult Register()
        {
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View();
        }

        [HttpPost]
        public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                // Attempt to register the user
                MembershipCreateStatus createStatus = MembershipService.CreateUser(model.UserName, model.Password, model.Email);

                if (createStatus == MembershipCreateStatus.Success)
                {
                    FormsService.SignIn(model.UserName, false /* createPersistentCookie */);
                    return RedirectToAction("Index", "Home");
                }
                else
                {
                    ModelState.AddModelError("", AccountValidation.ErrorCodeToString(createStatus));
                }
            }

            // If we got this far, something failed, redisplay form
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View(model);
        }

        // **************************************
        // URL: /Account/ChangePassword
        // **************************************

        [Authorize]
        public ActionResult ChangePassword()
        {
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View();
        }

        [Authorize]
        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model)
        {
            if (ModelState.IsValid)
            {
                if (MembershipService.ChangePassword(User.Identity.Name, model.OldPassword, model.NewPassword))
                {
                    return RedirectToAction("ChangePasswordSuccess");
                }
                else
                {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View(model);
        }

        // **************************************
        // URL: /Account/ChangePasswordSuccess
        // **************************************

        public ActionResult ChangePasswordSuccess()
        {
            return View();
        }

        [HttpPost]
        public JsonResult FacebookLogin(FacebookLoginModel model)
        {
            Session["uid"] = model.uid;
            Session["accessToken"] = model.accessToken;

            //creo un nuevo modelo del membership
            RegisterModel modelMembership = new RegisterModel();

            //trae la data del fb
            var client = new FacebookClient(Session["accessToken"].ToString());
            dynamic fbresult = client.Get("me?fields=id,email,first_name,last_name,gender,locale,link,username,timezone,location,picture,email");
            FacebookUserModel facebookUser = Newtonsoft.Json.JsonConvert.DeserializeObject<FacebookUserModel>(fbresult.ToString());

            //busca el mail de fb en el membership
            MembershipUser user = MembershipService.findUserByUserName(facebookUser.username);
            if (user == null)
            {
                //paso datos de fb al membership (nodelo)
                modelMembership.Email = facebookUser.email;
                modelMembership.Password = facebookUser.id;
                modelMembership.UserName = facebookUser.username;
                Register(modelMembership);
            }
            else { 
                LogOnModel logOnModel = new LogOnModel();
                logOnModel.UserName = user.UserName;
                logOnModel.Password = facebookUser.id;
                LogOn(logOnModel, null);
            }
            



            
            return Json(new { success = true });
        }

        [HttpGet]
        public ActionResult UserDetails()
        {
            var client = new FacebookClient(Session["accessToken"].ToString());
            dynamic fbresult = client.Get("me?fields=id,email,first_name,last_name,gender,locale,link,username,timezone,location,picture,email");
            FacebookUserModel facebookUser = Newtonsoft.Json.JsonConvert.DeserializeObject<FacebookUserModel>(fbresult.ToString());

            return View(facebookUser);
        }

    }
}
